Brilliance launches the birthstone feature for April: the timeless diamond. It provides interesting facts and figures, as well as information on the diamond’s color, variants, a location map of its mines all over the world, and its most recognizable physi

Caucasus The Caucasus /ˈkɔːkəsəs/ or Caucasia /kɔːˈkeɪʒə/ is a region at the border of Europe and Asia, situated between the Black and the Caspian seas. It is home to the Caucasus Mountains, which contain Europe's highest mountain, Mount Elbrus.

Quartz crystals with blue needles of Dumortierite inside. The locality, is western Bahia, near Vaca Morta Quarry, a remote and hard to reach area near the border with Tocantins state. - Photo: Jeff ScovilQuartz with Dumortierite inclusions